Meaning & use
hormones
Last updated
Chemical substances produced by glands in the body that travel through the blood to regulate the activity of organs and tissues.
See it in a sentence
Doctors checked her thyroid hormones after she reported constant fatigue.
Stress triggers the release of hormones like cortisol and adrenaline.
A note on using this word
Often used informally to blame mood swings ('it's just hormones'), but scientifically the term covers a wide range of regulatory chemicals, from insulin to estrogen.
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